Series A
This is a first-principles, conceptual paper. Almost every question is a one-line recall or definition, and only a handful need a quick calculation (Q7 mole conversion, Q8 API gravity, Q10 Cv of a diatomic gas). Difficulty is easy to moderate
Approximate topic distribution (out of 100)
| Topic | Approx. Qs | Question numbers |
|---|---|---|
| Fluid mechanics, pumps, flow, agitation | 30-32 | 20-32, 35, 36, 74-83, 85-87, 98 |
| Water and wastewater / environmental engineering | 26-28 | 33, 34, 37-53, 57, 91-93, 96, 97 |
| Petroleum and drilling, tanks, reservoirs | 17-18 | 8, 53-56, 58-67, 89, 100 |
| Hydropower | 7 | 68-73 |
| Materials, metallurgy, corrosion | 12-13 | 13-19, 84, 90 |
| Cement technology | 8 | 1-6, 94, 95 |
| General chemistry, thermodynamics, units | 6 | 7, 9-12, 88 |
Key trends
- Fluid mechanics dominates. It is the single largest block. Repeated themes are pump selection and working (gear, screw, peristaltic, centrifugal, reciprocating), cavitation and NPSH, dimensionless numbers (Re, Mach, power number), non-Newtonian fluids, and filtration.
- Environmental engineering is the second pillar. It includes BOD/COD, coagulation and flocculation, sewage treatment stages, eutrophication, and the oxygen sag curve. Assam-specific contamination (arsenic, fluoride) appears in Q91 and Q97
- Petroleum-sector orientation. it covers drilling rigs (Kelly, Christmas tree, jack-up, semi-submersible), cap rocks, storage tanks, dewaxing, and dissolved air flotation. Nearly one in five questions is oil and gas specific.
- Traps in the wording. About 10-12 questions use “NOT” or negatives (Q5, 15, 32, 40, 44, 57, 62), so misreading is a real risk.
- Very few numerical items. Only about 3-4 questions need actual computation, so speed on theory recall matters more than calculation skill.
- Cross-topic overlap. Pump questions appear in several places (Q27-29, 83, 85, 87), and agitation in Q35, 74, 75, and 98. Core mechanical operations (filtration, sedimentation, agitation) get repeated coverage.
- Some questions are outside core chemical engineering. Cement, hydropower, and metallurgy account for about 27 questions.
Course Purchase Query 